Practice Test GeeksNCCCO (National Commission for the Certification of Crane Operators) Practice Test
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Service Truck Crane Operator 4 Flashcards

7 cards from real NCCCO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Service Truck Crane Operator 4 flashcards as text

  1. What is the correct response when a service truck crane's anti-two-block device activates?

    Answer: Stop all lifting motion and lower the load slightly to relieve the condition

    When an anti-two-block device activates, the operator must stop hoisting and lower the load to prevent block-to-block contact and wire rope damage.

  2. Which factor is NOT typically listed on a service truck crane load chart?

    Answer: Operator's body weight

    Load charts specify rated capacities based on boom length, working radius, and outrigger configuration, not the operator's personal weight.

  3. When securing a load with a wire rope sling at a 45-degree angle from vertical, how does this affect the sling's effective capacity compared to a vertical lift?

    Answer: It reduces the capacity by approximately 29%

    At a 45-degree sling angle from vertical, the sling efficiency factor is approximately 0.707, reducing effective capacity by about 29%.

  4. What is the primary purpose of a load moment indicator (LMI) on a service truck crane?

    Answer: To alert the operator when the crane is approaching or exceeding its rated capacity

    The LMI monitors load and radius in real time and provides visual and audible warnings when the crane nears its rated capacity limit.

  5. According to NCCCO standards, what minimum distance must a crane maintain from energized power lines rated up to 50 kV?

    Answer: 10 feet

    OSHA 29 CFR 1926.1408 and NCCCO guidelines require a minimum 10-foot clearance from energized power lines up to 50 kV.

  6. A service truck crane operator notices that the hydraulic oil has a milky appearance. What does this most likely indicate?

    Answer: Water contamination in the hydraulic system

    Milky or cloudy hydraulic oil indicates water contamination, which reduces lubrication and can cause corrosion and system failure.

  7. When must an operator test all crane controls before beginning a lift with personnel?

    Answer: At the start of every shift and after any repair or adjustment

    Controls must be tested at the start of each shift and after any repair to verify proper function before any lifting operation.